Websites on Collections:
CrunchyMedia.com
DVD collection management program.
DVD Collection Tracker
Program to aid online catalog/database of personal DVD collections.
DVD Profiler
Software for cataloging DVD collections. Features, downloads, FAQ, and forum.
DVDExchange-Online
UK-based site allowing members to trade Region 1 and 2 DVD movies and games.
DVDLender
Service for creating online DVD lists and lending, borrowing, and trading with others.
Mediachest.com
Lets people inventory their collection of DVDs online and then search through their friends and friends of friends to find DVDs to borrow.